From 29bbb14bfc80dd760b07d2be0a27e610562982e3 Mon Sep 17 00:00:00 2001 From: Namjae Jeon Date: Thu, 4 Jun 2020 08:05:31 +0900 Subject: [Backport 29bbb14bfc80] exfat: fix incorrect update of stream entry in __exfat_truncate() At truncate, there is a problem of incorrect updating in the file entry pointer instead of stream entry. This will cause the problem of overwriting the time field of the file entry to new_size. Fix it to update stream entry. Fixes: 98d917047e8b ("exfat: add file operations") Cc: stable@vger.kernel.org # v5.7 Signed-off-by: Namjae Jeon --- src/file.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/file.c b/src/file.c index 8e3f0eef45d77345e6f57ef58f3e86c51c69e905..fce03f31878735e1fa389231abc1052f24447146 100644 --- a/src/file.c +++ b/src/file.c @@ -171,11 +171,11 @@ int __exfat_truncate(struct inode *inode, loff_t new_size) /* File size should be zero if there is no cluster allocated */ if (ei->start_clu == EXFAT_EOF_CLUSTER) { - ep->dentry.stream.valid_size = 0; - ep->dentry.stream.size = 0; + ep2->dentry.stream.valid_size = 0; + ep2->dentry.stream.size = 0; } else { - ep->dentry.stream.valid_size = cpu_to_le64(new_size); - ep->dentry.stream.size = ep->dentry.stream.valid_size; + ep2->dentry.stream.valid_size = cpu_to_le64(new_size); + ep2->dentry.stream.size = ep->dentry.stream.valid_size; } if (new_size == 0) { -- 2.31.1